N.C. Gen. Stat. § 136-102.9

Of the aircraft managed by the Department of Transportation, the use of aircraft for economic development purposes shall take precedence over all other uses except in cases of emergency or disaster response. The Department of Transportation shall annually review the rates charged for the use of aircraft and shall adjust the rates, as necessary, to account for upgraded aircraft and inflationary increases in operating costs, including jet fuel prices. If an aircraft is used to attend athletic events or for any other purpose related to collegiate athletics, the rate charged shall be equal to the direct cost of operating the aircraft as established by the aircraft's manufacturer, adjusted for inflation.